Aptitude
Drills
EPAM placement papers 2024
Overview
Section titled “Overview”EPAM placement papers 2024. Primary filter: EPAM Codility / Online Test. Focus: DSA, CS fundamentals, communication.
EPAM Aptitude Mock Quiz
Timed placement-style MCQs with score and explanations after you submit. Use it to check speed and accuracy before the real test.
Questions15
Time10 min
Reasoning
Find the next number: 2, 6, 12, 20, 30, ?
Differences +4, +6, +8, +10, +12 → next is 42.
Reasoning
Statements: All cats are dogs. Some dogs are birds. Conclusions: I. Some cats are birds. II. All birds are cats.
Analyzing the statements: - All cats are dogs (A → B) - Some dogs are birds (B → C, some) Conclusion I: Some cats are birds - Since all cats are dogs, and some dogs are birds, we can say some cats are birds. Valid Conclusion II: All birds are cats - This canno
Quantitative
A and B finish a job in 12 and 18 days. Working together they finish in:
1/12 + 1/18 = 5/36 → 36/5 = 7.2 days.
Reasoning
Find next number: 1, 4, 9, 16, 25, ?
Pattern: n² where n = 1, 2, 3, 4, 5... 1²=1, 2²=4, 3²=9, 4²=16, 5²=25 Next: 6² = 36
Verbal
"Break the ice" means:
It means to initiate conversation in a social setting.
Verbal
Antonym of "Benevolent":
Benevolent ↔ malevolent.
Verbal
There _____ many books on the table.
Many books → plural.
Quantitative
A can complete a work in 10 days, B in 15 days. In how many days will they complete the work together?
Let total work = LCM of 10, 15 = 30 units A's efficiency = 30/10 = 3 units/day B's efficiency = 30/15 = 2 units/day Combined efficiency = 3 + 2 = 5 units/day Time taken = 30/5 = 6 days
Quantitative
If "APPLE" is coded as "BQQMF", how is "ORANGE" coded?
Correct answer: PSBOHF
Reasoning
Find the next number: 3, 9, 27, 81, ?
×3 each → 243.
Quantitative
Five people A, B, C, D, E sit in a row. A is not at either end. B sits next to A. C sits at one end. D sits between C and E. Who sits in the middle?
C is at one end. D is between C and E, so: C-D-E or E-D-C A is not at end, B is next to A If C-D-E, then A-B must be before: A-B-C-D-E (A at end, invalid) So: E-D-C, and A-B before: A-B-E-D-C Middle position: E
Verbal
He _____ to school every day.
Singular present.
Quantitative
A shopkeeper marks goods 40% above cost and gives a 10% discount. Profit % is:
SP = 1.4 × 0.9 × CP = 1.26 CP → 26% profit.
Quantitative
Speed 72 km/h. Distance in 20 minutes:
72 × (20/60) = 24 km.
Reasoning
If letter positions are summed (A=1…Z=26), PEN equals:
Sum of positions = 35.
Your score
0/15(0%)
Review
Sample EPAM Questions with Solutions
Section titled “Sample EPAM Questions with Solutions”Practice-style questions (not leaked live papers).
Aptitude / Reasoning
Section titled “Aptitude / Reasoning”Q1: CP Rs.500, SP Rs.600. Profit percent?
Answer: 20%
Explanation: (100/500)*100=20%.
Q2: Find next: 2, 6, 12, 20, 30, ?
Answer: 42
Explanation: n(n+1) pattern.
Q3: A train 120 m long runs at 54 km/h. Time to pass a pole?
Answer: 8 seconds
Explanation: 54 km/h = 15 m/s; t = 120/15 = 8 s.
Q4: Ratio of ages A:B = 4:5. After 6 years = 6:7. A present age?
Answer: 12 years
Explanation: 4x+6 / 5x+6 = 6/7 => x=3 => A=12.
Q5: Simple interest on Rs.8000 at 10% for 2 years?
Answer: Rs.1600
Explanation: SI = PRT/100 = 1600.
Q6: If 30% of x = 150, x = ?
Answer: 500
Explanation: 0.3x=150 => x=500.
Q7: Average of 5 numbers is 20. One number 30 replaced by 10. New average?
Answer: 16
Explanation: Sum 100 -> 80; avg 16.
Q8: A finishes in 10 days, B in 15. Together?
Answer: 6 days
Explanation: 1/10+1/15=1/6.
Coding Practice
Section titled “Coding Practice”Coding Q1: Valid parentheses
Approach: Stack matching.
Complexity: O(n)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q2: Two Sum
Approach: Hash map complements.
Complexity: O(n)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q3: Longest substring without repeat
Approach: Sliding window + last index.
Complexity: O(n)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q4: Merge intervals
Approach: Sort + merge.
Complexity: O(n log n)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q5: Top K frequent
Approach: Count + heap.
Complexity: O(n log k)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q6: Linked list cycle
Approach: Floyd tortoise-hare.
Complexity: O(1) space
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q7: Level order traversal
Approach: BFS queue.
Complexity: O(n)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q8: Coin change min coins
Approach: DP unbounded.
Complexity: O(amount*coins)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q9: Binary search
Approach: Lo/hi mid.
Complexity: O(log n)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Coding Q10: Kadane max subarray
Approach: Running best.
Complexity: O(n)
EPAM tip: Narrate brute force then optimize then edge cases before coding.
Deep Prep Notes for EPAM
Section titled “Deep Prep Notes for EPAM”How the EPAM Codility / Online Test Usually Feels
Section titled “How the EPAM Codility / Online Test Usually Feels”Candidates describe a paced filter where easy marks disappear if you over-invest in one hard item. For EPAM, start with a three-minute scan, mark certainty levels, and protect accuracy. Languages typically include Java, JavaScript, Python, C#.
Topic Weight Hints (Candidate-Reported)
Section titled “Topic Weight Hints (Candidate-Reported)”| Area | Why it matters at EPAM |
|---|---|
| DSA | Primary shortlist signal |
| Core CS (OOPs/DBMS/OS) | Technical interview depth |
| Software Engineering, Digital Platforms awareness | Managerial / HR differentiation |
| Communication | Especially for consulting and client-facing GSIs |
14-Day Sprint
Section titled “14-Day Sprint”- Days 1-3: pattern familiarization + 2 sectional mocks
- Days 4-7: weak-topic closed practice
- Days 8-10: full mocks every other day
- Days 11-14: interview narration + light revision
Related
Section titled “Related”Coding
DSA
OA
Assessment
Hub
EPAM
Similar Companies
Section titled “Similar Companies”Nagarro · Thoughtworks · Globant · Publicis Sapient · GlobalLogic · TCS